Page 37 - Kalkulus Lanjut

( , , ) = ( , , )

∂ ∂
=
∂ ∂

2
2
2
∂(5 − 2 + ) ∂( + + − 30)
∂ = ∂

−2 = (2 )

1
= − (2)

( , , ) = ( , , )

∂ = ∂
∂ ∂
2
2
2
∂(5 − 2 + ) = ∂( + + − 30)
∂ ∂
1 = (2 )

1
= (3)
2

, ) = + + − 30 = 0 (4)
( , 2 2 2

Dari (1) dan (2) diperoleh

=
1
2

5 1
= −
2

5 = −2

2
= − (5)
5

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